she also believes the justices may come to a compromise, even portions of doma may be struck down. >> i think it will be appealing for conservatives on the court because it's a question of the federal government coming in to legislate in an area that has been traditionally reserved for the states making marriage law. i think it's a very conservative argument that will appeal to more conservative members of the court. then the liberal members of the court will be excited about being able to sort of affirm a commitment to progressive values like same-sex marriage. >> reporter: here's a breakdown of what may happen in the next few days. if the court strikes down prop 8 as a violation of constitutional rights same-sex marriage would become legal nationwide. or the cot can support prop 8, that means the state can decide whether or not to legalize same marriage. the supporters could be found to lack standing. some legal experts think the lower court rulings would stand if that were the case. >>> a berkeley couple will also attend the hearing. they've been together for 13 years and raised fo